102655 has 12 divisors (see below), whose sum is σ = 143640. Its totient is φ = 70224.

The previous prime is 102653. The next prime is 102667. The reversal of 102655 is 556201.

It is a happy number.

It is not a de Polignac number, because 102655 - 2¹ = 102653 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36 + ... + 454.

It is an arithmetic number, because the mean of its divisors is an integer number (11970).

2¹⁰²⁶⁵⁵ is an apocalyptic number.

102655 is a deficient number, since it is larger than the sum of its proper divisors (40985).

102655 is an equidigital number, since it uses as much as digits as its factorization.

102655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438 (or 431 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 102655 is about 320.3981897577. The cubic root of 102655 is about 46.8230862308.

Adding to 102655 its reverse (556201), we get a palindrome (658856).

It can be divided in two parts, 1026 and 55, that added together give a triangular number (1081 = T₄₆).

The spelling of 102655 in words is "one hundred two thousand, six hundred fifty-five".